Improvement in bobbins



ATENT Gerace.

CHARLES A. SHAW, OF BIDDEFORD, MAINE.

IMPRCVEMENT IN BOBBINS.

Specification forming part of Letters Patent No. 410,952, dated December15, 1863.

T 0 all whom, it may concern.-

Be it known that I, CHARLES A. SHAW, of the city of Biddeford, in thecounty of York and State of Maine, have invented a new and usefulImprovement in Bobbins; and I hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, of which- Figure l is a perspective view ofmy improved bobbin. Fig. 2 is a sectional outline view of the same. Fig.3 is a sectional outline view of the same. Fig. 4 is a transverseVlongitudinal view of a common bobbin for warp Fig. 5 is a transverselongitudinal view of a common bobbin for roving Fig. 6 is an end view ofmy improved bobbin.

Corresponding letters refer to corresponding parts.

The nature of my invention will be understood from the followingdescription.

A common warp-bobbin, used in the manufacture of cotton, is made asshown in Fig. 4, having a hole (shown by the dotted lines pp) throughthe center, and ends m m nearly square on the outside and straight 'orslightly eoncaved, as at x x, on the inside. A common roving-bobbin ismerely a straight cylinder, having a hole through the center, as shownby the dotted lines p p, Fig. 5, and entirely without ends correspondingto those found on the warp-bobbin shown in Fig. 4:.

In Fig. 1, A is the body of my improved bobbin. fis a gage, guide,or-boss, and m m the ends, which are made conical or coneshaped, withthe outside faces concaved, as shown by the dotted lines :u x. There isa hole through the center, (shown by the dotted lines p p.) By makingthe ends conical, as shown in Fig. 1, a very much larger amount ofthread or yarn can be run onto the bobbin, as it can be built up atright angles to the faces g q of the ends m m, to make the full bobbinassume the shape shown by the dotted lines 7c 7c, as cannot be done onthe old bobbin. Smaller ends can also be used, and

by concaving the outside faces of them, as shown by the dotted lines 'vn, the bobbin is permitted to traverse7 farther in the flier, and alonger bobbin can consequently be used.

At o, Fig. 1, there is a. groove turned or cut into the body of thebobbin, between the boss or gage f and the end m. This groove is cutdeep enough to pass below the level or plane of the body A, as is shownin Fig. 2, where the dotted line z represents the level of the body A.The object of this groove is to enable the doffer to fasten the end ofthe thread readily when doiing77 or taking the full bobbin from theframe.

In the use of the common bobbin, Fig. 4, when the thread begins to runon, a number of turns have to be taken around the body A before the endof the thread will fasten, and there is always great uncertainty infastening it, and liability of breakage, as well as loss of time instarting up the frame. By the use of the groove o the doft'er canimmediately fasten the thread, the groove being V-shaped, so that eachsuccessive coil binds all the others firmly. The boss or gage facts as aguide for the fingers in holding the bobbin to fasten the thread, andalso forms one side or angle of the groove o, although the boss can beleft oft' entirely and the groove out below the surface of the bod y ofthe bobbin, as shown in Fig. 3.

In addition to the ends m m being countersunk or ooncaved at theextremities of the perforation or hole 19 p, they are also turned or cutout to about a quarter of an inch in depth, as at a, a, Fig. 6, leavinga rim from one-eighth to one-quarter of an inch in Width around theoutside edge ofthe ends m m. The object of this is to enable the bobbinto fall down over or pass over a Washer at the base of the spindle, andon which the bobbin stands when beingfllled, thus giving it still moretraverse than the concaved or countersunk ends of the hole orperforation p p would give it.

Any practical spinner will readily see the great advantage of having theends of the threads all securely fastened the first time in starting up7the frame, and also the importance of being able to get on more thread,as well the advantage of having the bobbin traverse as far as possiblein the iiier.

I am aware that bobbins have been used having the faces of the ends sunkor out out, as in Iearls invention, already patented; also that bobbinshaving cone-shaped ends m m g g have been used, as in Husseys patent ofOctober 28, 1862; also that a groove, o, and bosses f f have been used,as in Saunders patent of August 25, 1863. I therefore eluiin none of'these features, when they are sepal mtely and in themselves Considered.

I claim- A bobbin substantially sueh as described, combining in one andthe same article the grooves o 0, bosses ff, and conical or cone shapedends m m g g; andthis I claim whether the said ends are eut; out or sunkOn their Outside fuees, in the manner described, or not. vCHARLES A.SHAW. Witnesses JOHN F. LORD, GEURGE H. ADAMS.

